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. 2016 Dec 27;7:645. doi: 10.3389/fphys.2016.00645

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Copyright © 2016 Tichy, Hellwig and Zopf.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Example of the activity of an ON and an OFF ORN in the same sensillum during a ramp-like upward concentration change of +20%/s followed by a ramp-like downward concentration change of −20%/s of the odor of lemon oil. (A) Yellow region shows time course of odor concentration measured by flow meter. (B) extracellularly recorded activity; the OFF ORN displayed larger impulse amplitudes than the ON ORN. (C,D) responses of both types of ORNs represented in raster plots. Spike identification was performed offline using the software Spike 2.